EP1616766B1 - Command module and control method for a pneumatic trailer brake - Google Patents

Command module and control method for a pneumatic trailer brake Download PDF

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Publication number
EP1616766B1
EP1616766B1 EP05015224A EP05015224A EP1616766B1 EP 1616766 B1 EP1616766 B1 EP 1616766B1 EP 05015224 A EP05015224 A EP 05015224A EP 05015224 A EP05015224 A EP 05015224A EP 1616766 B1 EP1616766 B1 EP 1616766B1
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EP
European Patent Office
Prior art keywords
solenoid
valve
pressure
compressed
control module
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP05015224A
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German (de)
French (fr)
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EP1616766A3 (en
EP1616766A2 (en
Inventor
Georg Bobinger
István Matolcsi
Martin Mederer
László Palkovics
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Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH
Knorr Bremse Systeme fuer Schienenfahrzeuge GmbH
Original Assignee
Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH
Knorr Bremse Systeme fuer Schienenfahrzeuge GmbH
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Publication of EP1616766A2 publication Critical patent/EP1616766A2/en
Publication of EP1616766A3 publication Critical patent/EP1616766A3/en
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Publication of EP1616766B1 publication Critical patent/EP1616766B1/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
    • B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration

Definitions

  • the invention relates to a control module for a trailer brake system of a utility vehicle, comprising at least one compressed air control input for supplying a control pressure, at least one compressed air supply input for supplying a supply pressure, a plurality of compressed air outputs for the connection of brake elements and a plurality of electrically controllable solenoid valves and a plurality of cooperating with the solenoid valves Relay valves, which are arranged so that the compressed air outputs can be pressurized depending on the switching states of the solenoid valves.
  • the invention further relates to a method for controlling pneumatic functions of a NutzkraftGerman Wegrs with a control module with at least one compressed air control input for supplying a control pressure, at least one compressed air supply inlet for supplying a supply pressure, a plurality of compressed air outputs for the connection of brake elements and a plurality of electrically controllable solenoid valves and a plurality with the solenoid valves cooperating relay valves, which are arranged so that the compressed air outputs are acted upon in response to the switching states of the solenoid valves with pressure.
  • Such control modules are used in the context of an electronic braking system (EBS) for trailers.
  • EBS electronic braking system
  • an electronic braking system is also suitable for controlling further functions relating to the trailer.
  • This includes, for example, an automatic reset associated with a hoisting-lowering device (RTR "Reset to Ride”).
  • RTR "Reset to Ride”
  • a lifting-lowering valve is used in a commercial vehicle trailer to lower or raise the cargo area when the trailer is stationary.
  • bellows are vented or ventilated. Since the state of the bellows has an influence on the other EBS functions, it is necessary to automatically reset the lifting-lowering valve when the vehicle resumes or at a certain maximum speed.
  • an electrical control of the lifting-lowering valve by the control of the electronic brake system.
  • Another example of an additional consumer, which is electrically controlled by the control of the electronic brake system is the lift axle valve of the lift axle control (LAC).
  • the invention has the object of developing a control module of the prior art with little design effort so that in addition to the basic brake functions, a control of additional consumers is possible without relying on a direct control by the control of the electronic brake system.
  • the invention is based on the generic control module characterized in that at least one additional compressed air outlet for the connection and the pneumatic control of at least one additional consumer is provided and that at least one further controllable solenoid valve is arranged so that the further compressed air output in dependence of the switching state of the solenoid valve with pressure can be applied.
  • at least one additional compressed air outlet for the connection and the pneumatic control of at least one additional consumer is provided and that at least one further controllable solenoid valve is arranged so that the further compressed air output in dependence of the switching state of the solenoid valve with pressure can be applied.
  • the invention is based on the prior art in a particularly advantageous manner that two compressed air outputs for the connection of brake elements and four with two relay valves cooperating solenoid valves are provided and that two compressed air outputs for the connection of additional consumers and two more these compressed air outputs associated solenoid valves are provided.
  • a control module of the prior art with six solenoid valves, that is, a backup solenoid valve, a Bel dividedemagnetventil and a bleed solenoid valve for each side of the vehicle, the present invention can be realized without much design effort.
  • the basic brake functions can also be realized by four solenoid valves, so that the remaining solenoid valves are available for the pneumatic control of the additional consumers.
  • the solenoid valves cooperating with the relay valves comprise two 2/2 valves and two 3/2 valves, and that the at least one further solenoid valve is a 3/2 valve.
  • the design of the solenoid valves cooperating with the relay valves as two 2/2 valves and two 3/2 valves offers the possibility of the basic brake functions according to the disclosure of WO 03/053758 A1 to realize.
  • the solenoid valves for the additional consumers are designed as 3/2 valves in order to be able to selectively vent the pneumatic control output to the atmosphere or to connect the pneumatic control output to the supply pressure.
  • pressure sensors are provided for detecting pressures at terminals of the control module. By evaluating the pressures detected by the pressure sensors, the brake system can be monitored. To ensure that the braking functions are preferably provided by the control module, the pressures are detected in particular at the compressed air outputs. Only when a given Minimum pressure for the braking functions is available, the additional consumers can be supplied as part of a prioritization.
  • At least one pressure sensor can be connected via a solenoid valve depending on the switching state of the solenoid valve with different measuring points. This multiplexing function achieves a reduction of the required pressure sensors and thus a reduction of costs.
  • the invention is advantageously further developed in that a lifting-lowering valve with automatic reset (RTR valve) and / or a Liftachsventil (LAC valve) and / or a 2/2-valve can be connected as additional consumers. These are just a few examples of additional consumers. Every additional function in the trailer is always accessible to the pneumatic control.
  • the control module is further formed particularly advantageous in that it has an electronic control for driving the solenoid valves and for detecting and processing of pressure-dependent signals.
  • the electronic control is thus an integral part of the control module and thus structurally combined in particular with the described valves, pressure sensors and other components of the control module.
  • the invention is based on the method according to the invention in that at least one additional consumer pneumatically actuated via at least one additional compressed air outlet is and that at least one further electrically controllable solenoid valve is arranged so that the further compressed air output in response to the switching state of the solenoid valve is pressurized.
  • a lift-lower valve with automatic reset (RTR valve) and / or a Liftachsventil (LAC valve) and / or a 2/2-valve are pneumatically controlled via the control module as an additional consumer.
  • the invention further relates to a utility vehicle having a control module according to the invention.
  • the invention is based on the finding that, starting from a control module of the prior art, a control module can be provided without great constructive effort, on the one hand, the base brake functions of the electronic brake system available on the other hand allows a pneumatic control of additional consumers.
  • FIG. 1 shows a schematic representation of a first embodiment of a control module 100 according to the invention.
  • the control module 100 has a compressed air control input 4 to which a control pressure from a (not shown) brake valve can be supplied.
  • the control module 100 further has a supply input 1-1, to which a (not shown) compressed air reservoir can be connected.
  • compressed air outputs 21, 22 are provided for the connection of pneumatic brake elements.
  • solenoid valves 110, 112, 114, 116 and two relay valves 118, 120 are provided.
  • the illustrated switching state of the solenoid valves 110, 112, 114, 116 reaches control pressure from the control input 4 via the 3/2-way valve 112 to the 2/2-valves 116 and from there to the respective relay valves 118, 120.
  • the compressed air outputs 21, 22 fed via the relay valves 118, 120 pressure can be transferred independently of each other in their respective other switching state, so that the compressed air outputs 21, 22 can be acted upon individually with compressed air.
  • a relay valve 118, 120 or both relay valves 118, 120 depending on the switching state of the solenoid valves 114, 116 are supplied to the control input of the compressed air supply input 1-1 applied pressure.
  • the control module 100 includes another input 1-2. This input 1-2 is connected via a double check valve 138, which communicates with outputs 23, 24. These outputs 23, 24 are provided for the connection of further spring-actuated brake elements.
  • the control module 100 is further equipped with two 3/2 solenoid valves 130, 132.
  • compressed air from the compressed air supply input 1-1 and the respective solenoid valves 130, 132 to the compressed air outlets 122, 124 and from there to the additional consumers 126, 128 arrive.
  • the additional consumers may be, for example, a lift-lower valve with automatic reset 126 and a lift axle valve 128.
  • a traction control system can be pneumatically controlled by the control module 100 as an additional consumer.
  • the control module 100 is further associated with an electronic control unit 136, which is preferably integrated in the control module 100.
  • This electronic control unit takes over the control of the solenoid valves 110, 112, 114, 116, 130, 132, and detects the output signals of the pressure sensors 142, 144, 146, 148, 150.
  • the pressure sensor 142 measures the control pressure
  • the pressure sensor 146 measures the supply pressure.
  • the pressure sensors 144 and 148 measure the pressures at the pressure outputs 21 and 22, respectively.
  • the pressure sensor 150 is provided to detect the load condition of the trailer via the port 42.
  • the signals corresponding to the measured pressures are processed by the electronic control unit of the control module. In particular, it is ensured that sufficient pressure for the provision of the base brake functions is available before the additional consumers 126, 128 compressed air is supplied.
  • FIG. 2 shows a schematic representation of a second embodiment of a control module according to the invention.
  • the second embodiment corresponds in many parts to the first embodiment of the invention, so that the description of the corresponding components and functions can be dispensed with.
  • additional consumers and the electronic control are to simplify the presentation in FIG. 2 Not shown.
  • the detection of the pressures by three pressure sensors 144, 152, 154 realized. This is achieved by the additional presence of two further 2/2-solenoid valves 156, 158. In the illustrated de-energized state of the solenoid valve 156 is detected by the pressure sensor 152, the brake pressure at the output 21.
  • the solenoid valve 158 is used to selectively detect the pressures at the terminals 22 and 42. It is also within the scope of the invention to reverse the switching states with respect to the energization, that is in the energized state to detect the brake pressure at the outlet 21 and in the de-energized state, the reservoir pressure at the compressed air supply input 1-1.
  • FIGS. 1 and 2 Further differences between the embodiments according to the FIGS. 1 and 2 are that in the embodiment according to FIG. 2 two further ports 25, 26 are provided on the double check valve 138 and that the two venting outputs 3 of FIG. 1 to a vent outlet according to FIG. 2 are summarized.

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Braking Systems And Boosters (AREA)
  • Regulating Braking Force (AREA)
  • Valves And Accessory Devices For Braking Systems (AREA)
  • Hydraulic Control Valves For Brake Systems (AREA)

Abstract

The control module, for the brakes of a truck trailer, has a compressed air control input (1-1) to deliver a compressed air supply. A number of compressed air outlets (21,22) are connected to the brakes. Electrically controlled magnet valves (110,112,114,116) work with relay valves (118,120) so that the compressed air outlets are charged with compressed air according to the switched state of the magnet valves. Further magnet valves (130,132) control the compressed air feed to additional outlets (126,128) for other pneumatic systems e.g. to raise/lower floors, tailgates, axles, etc.

Description

Die Erfindung betrifft ein Steuermodul für eine Anhängerbremsanlage eines Nutzkraftfahrzeugs, mit mindestens einem Druckluft-Steuereingang zum Zuführen eines Steuerdrucks, mindestens einem Druckluft-Vorratseingang zum Zuführen eines Vorratsdrucks, mehreren Druckluftausgängen für den Anschluss von Bremselementen und mehreren elektrisch ansteuerbaren Magnetventilen sowie mehreren mit den Magnetventilen zusammenwirkenden Relaisventilen, die so angeordnet sind, dass die Druckluftausgänge in Abhängigkeit der Schaltzustände der Magnetventile mit Druck beaufschlagt werden können.The invention relates to a control module for a trailer brake system of a utility vehicle, comprising at least one compressed air control input for supplying a control pressure, at least one compressed air supply input for supplying a supply pressure, a plurality of compressed air outputs for the connection of brake elements and a plurality of electrically controllable solenoid valves and a plurality of cooperating with the solenoid valves Relay valves, which are arranged so that the compressed air outputs can be pressurized depending on the switching states of the solenoid valves.

Die Erfindung betrifft weiterhin ein Verfahren zum Steuern pneumatischer Funktionen eines Nutzkraftfahrzeuganhängers mit einem Steuermodul mit mindestens einem Druckluft-Steuereingang zum Zuführen eines Steuerdrucks, mindestens einem Druckluft-Vorratseingang zum Zuführen eines Vorratsdrucks, mehreren Druckluftausgängen für den Anschluss von Bremselementen und mehreren elektrisch ansteuerbaren Magnetventilen sowie mehreren mit den Magnetventilen zusammenwirkenden Relaisventilen, die so angeordnet sind, dass die Druckluftausgänge in Abhängigkeit der Schaltzustände der Magnetventile mit Druck beaufschlagt werden.The invention further relates to a method for controlling pneumatic functions of a Nutzkraftfahrzeuganhängers with a control module with at least one compressed air control input for supplying a control pressure, at least one compressed air supply inlet for supplying a supply pressure, a plurality of compressed air outputs for the connection of brake elements and a plurality of electrically controllable solenoid valves and a plurality with the solenoid valves cooperating relay valves, which are arranged so that the compressed air outputs are acted upon in response to the switching states of the solenoid valves with pressure.

Derartige Steuermodule kommen im Rahmen eines elektronischen Bremssystems (EBS) für Anhänger zum Einsatz.Such control modules are used in the context of an electronic braking system (EBS) for trailers.

Es sind verschiedene Lösungen zur Realisierung eines solchen Steuermoduls bekannt. Ältere Lösungen verwenden pro Fahrzeugseite drei Magnetventile, um die Basisbremsfunktionen ausführen zu können. Gemäß neueren Ansätzen sind hierfür nur noch vier Magnete erforderlich. Ein derartiges System ist in der WO 03/053758 A1 veröffentlicht.Various solutions for the realization of such a control module are known. Older solutions use three solenoids per side of the vehicle to perform basic braking functions. According to recent approaches only four magnets are required for this purpose. Such a system is in the WO 03/053758 A1 released.

Neben der Steuerung der Basisbremsfunktionen ist ein elektronisches Bremssystem auch geeignet, weitere den Anhänger betreffende Funktionen zu steuern. Hierzu zählt beispielsweise eine mit einer Hebe-Senk-Einrichtung zusammenhängende automatische Rückstellung (RTR = "Reset to Ride"). Ein Hebe-Senk-Ventil dient bei einem Nutzkraftfahrzeuganhänger dazu, die Ladefläche im Stillstand des Anhängers bedarfsgemäß zu senken oder anzuheben. Zu diesem Zweck werden Federbälge entlüftet beziehungsweise belüftet. Da der Zustand der Federbälge einen Einfluss auf die sonstigen EBS-Funktionen hat, ist es erforderlich, bei Wiederaufnahme des Fahrbetriebs beziehungsweise ab einer bestimmten Höchstgeschwindigkeit, eine automatische Rückstellung des Hebe-Senk-Ventils vorzunehmen. Zu diesem Zweck erfolgt gemäß dem Stand der Technik eine elektrische Ansteuerung des Hebe-Senk-Ventils durch die Steuerung des elektronischen Bremssystems. Ein weiteres Beispiel für einen Zusatzverbraucher, der von der Steuerung des elektronischen Bremssystems elektrisch angesteuert wird, ist das Liftachsventil der Liftachssteuerung (LAC).In addition to the control of the basic brake functions, an electronic braking system is also suitable for controlling further functions relating to the trailer. This includes, for example, an automatic reset associated with a hoisting-lowering device (RTR = "Reset to Ride"). A lifting-lowering valve is used in a commercial vehicle trailer to lower or raise the cargo area when the trailer is stationary. For this purpose bellows are vented or ventilated. Since the state of the bellows has an influence on the other EBS functions, it is necessary to automatically reset the lifting-lowering valve when the vehicle resumes or at a certain maximum speed. For this purpose, according to the prior art, an electrical control of the lifting-lowering valve by the control of the electronic brake system. Another example of an additional consumer, which is electrically controlled by the control of the electronic brake system, is the lift axle valve of the lift axle control (LAC).

Der Erfindung liegt die Aufgabe zugrunde, ein Steuermodul des Standes der Technik mit geringem konstruktivem Aufwand so weiterzubilden, dass neben den Basisbremsfunktionen eine Steuerung von Zusatzverbrauchern möglich ist, ohne auf eine direkte Ansteuerung durch die Steuerung des elektronischen Bremssystems angewiesen zu sein.The invention has the object of developing a control module of the prior art with little design effort so that in addition to the basic brake functions, a control of additional consumers is possible without relying on a direct control by the control of the electronic brake system.

Diese Aufgabe wird mit den Merkmalen der unabhängigen Ansprüche gelöst.This object is achieved with the features of the independent claims.

Vorteilhafte Ausführungsformen der Erfindung sind in den abhängigen Ansprüchen angegeben.Advantageous embodiments of the invention are indicated in the dependent claims.

Die Erfindung baut auf dem gattungsgemäßen Steuermodul dadurch auf, dass mindestens ein weiterer Druckluftausgang für den Anschluss und die pneumatische Ansteuerung mindestens eines Zusatzverbrauchers vorgesehen ist und dass mindestens ein weiteres ansteuerbares Magnetventil so angeordnet ist, dass der weitere Druckluftausgang in Abhängigkeit des Schaltzustands des Magnetventils mit Druck beaufschlagt werden kann. Im Gegensatz zu der Lösung des Standes der Technik, bei der Zusatzverbraucher elektrisch angesteuert werden, findet erfindungsgemäß eine pneumatische Ansteuerung statt.The invention is based on the generic control module characterized in that at least one additional compressed air outlet for the connection and the pneumatic control of at least one additional consumer is provided and that at least one further controllable solenoid valve is arranged so that the further compressed air output in dependence of the switching state of the solenoid valve with pressure can be applied. In contrast to the solution of the prior art, are electrically controlled in the additional consumers, according to the invention takes place a pneumatic control.

Die Erfindung baut in besonders vorteilhafter Weise dadurch auf dem Stand der Technik auf, dass zwei Druckluftausgänge für den Anschluss von Bremselementen und vier mit zwei Relaisventilen zusammenwirkende Magnetventile vorgesehen sind und dass zwei Druckluftausgänge für den Anschluss von Zusatzverbrauchern und zwei weitere diesen Druckluftausgängen zugeordnete Magnetventile vorgesehen sind. Geht man von einem Steuermodul des Standes der Technik mit sechs Magnetventilen aus, das heißt einem Backupmagnetventil, einem Belüftemagnetventil und einem Entlüftemagnetventil für jede Fahrzeugseite, so lässt sich die vorliegende Erfindung ohne großen konstruktiven Aufwand realisieren. Die Basisbremsfunktionen lassen sich auch durch vier Magnetventile realisieren, so dass die verbleiben Magnetventile für die pneumatische Ansteuerung der Zusatzverbraucher zur Verfügung stehen.The invention is based on the prior art in a particularly advantageous manner that two compressed air outputs for the connection of brake elements and four with two relay valves cooperating solenoid valves are provided and that two compressed air outputs for the connection of additional consumers and two more these compressed air outputs associated solenoid valves are provided. Assuming a control module of the prior art with six solenoid valves, that is, a backup solenoid valve, a Belüftemagnetventil and a bleed solenoid valve for each side of the vehicle, the present invention can be realized without much design effort. The basic brake functions can also be realized by four solenoid valves, so that the remaining solenoid valves are available for the pneumatic control of the additional consumers.

Nützlicherweise ist vorgesehen, dass die mit den Relaisventilen zusammenwirkenden Magnetventile zwei 2/2-Ventile und zwei 3/2-Ventile umfassen und dass das mindestens eine weitere Magnetventil ein 3/2-Ventil ist. Die Auslegung der mit den Relaisventilen zusammenwirkenden Magnetventile als zwei 2/2-Ventile und zwei 3/2-Ventile bietet die Möglichkeit, die Basisbremsfunktionen gemäß der Offenbarung der WO 03/053758 A1 zu realisieren. Die Magnetventile für die Zusatzverbraucher sind als 3/2-Ventile ausgelegt, um so wahlweise eine Entlüftung des pneumatischen Steuerausgangs zur Atmosphäre oder eine Verbindung des pneumatischen Steuerausgangs mit dem Vorratsdruck realisieren zu können.Usefully, it is provided that the solenoid valves cooperating with the relay valves comprise two 2/2 valves and two 3/2 valves, and that the at least one further solenoid valve is a 3/2 valve. The design of the solenoid valves cooperating with the relay valves as two 2/2 valves and two 3/2 valves offers the possibility of the basic brake functions according to the disclosure of WO 03/053758 A1 to realize. The solenoid valves for the additional consumers are designed as 3/2 valves in order to be able to selectively vent the pneumatic control output to the atmosphere or to connect the pneumatic control output to the supply pressure.

Es ist bevorzugt, dass Drucksensoren zum Erfassen von Drücken an Anschlüssen des Steuermoduls vorgesehen sind. Durch das Auswerten der von den Drucksensoren erfassten Drücke lässt sich das Bremssystem überwachen. Um sicherzustellen, dass die Bremsfunktionen von dem Steuermodul bevorzugt zur Verfügung gestellt werden, werden die Drücke insbesondere an den Druckluftausgängen erfasst. Erst wenn ein vorgegebener Mindestdruck für die Bremsfunktionen zur Verfügung steht, können die Zusatzverbraucher im Rahmen einer Priorisierung versorgt werden.It is preferred that pressure sensors are provided for detecting pressures at terminals of the control module. By evaluating the pressures detected by the pressure sensors, the brake system can be monitored. To ensure that the braking functions are preferably provided by the control module, the pressures are detected in particular at the compressed air outputs. Only when a given Minimum pressure for the braking functions is available, the additional consumers can be supplied as part of a prioritization.

Es kann von besonderem Vorteil sein, dass mindestens ein Drucksensor über ein Magnetventil je nach Schaltzustand des Magnetventils mit unterschiedlichen Messpunkten verbunden werden kann. Durch diese Multiplexfunktion erreicht man eine Reduzierung der erforderlichen Drucksensoren und somit eine Reduzierung von Kosten.It may be of particular advantage that at least one pressure sensor can be connected via a solenoid valve depending on the switching state of the solenoid valve with different measuring points. This multiplexing function achieves a reduction of the required pressure sensors and thus a reduction of costs.

Die Erfindung ist in vorteilhafter Weise dadurch weitergebildet, dass als Zusatzverbraucher ein Hebe-Senk-Ventil mit automatischer Rückstellung (RTR-Ventil) und/oder ein Liftachsventil (LAC-Ventil) und/oder ein 2/2-Ventil anschließbar sind. Hierbei handelt es sich nur um einige Beispiele von Zusatzverbrauchern. Jede Zusatzfunktion im Anhänger ist der pneumatischen Ansteuerung grundsätzlich zugänglich.The invention is advantageously further developed in that a lifting-lowering valve with automatic reset (RTR valve) and / or a Liftachsventil (LAC valve) and / or a 2/2-valve can be connected as additional consumers. These are just a few examples of additional consumers. Every additional function in the trailer is always accessible to the pneumatic control.

Das Steuermodul ist weiterhin dadurch besonders vorteilhaft ausgebildet, dass es eine elektronische Steuerung zum Ansteuern der Magnetventile und zum Erfassen und Verarbeiten von druckabhängigen Signalen aufweist. Die elektronische Steuerung ist somit integrierter Bestandteil des Steuermoduls und damit insbesondere mit den beschriebenen Ventilen, Drucksensoren und weiteren Bauteilen des Steuermoduls baulich vereinigt.The control module is further formed particularly advantageous in that it has an electronic control for driving the solenoid valves and for detecting and processing of pressure-dependent signals. The electronic control is thus an integral part of the control module and thus structurally combined in particular with the described valves, pressure sensors and other components of the control module.

Die Erfindung baut auf dem erfindungsgemäßen Verfahren dadurch auf, dass über mindestens einen weitere Druckluftausgang mindestens ein Zusatzverbraucher pneumatisch angesteuert wird und dass mindestens ein weiteres elektrisch ansteuerbares Magnetventil so angeordnet ist, dass der weitere Druckluftausgang in Abhängigkeit des Schaltzustands des Magnetventils mit Druck beaufschlagt wird. Hierdurch werden die Vorteile und Besonderheiten des erfindungsgemäßen Steuermoduls auch im Rahmen eines Verfahrens umgesetzt. Dies gilt auch für die nachfolgend angegebenen besonders bevorzugten Ausführungsformen des erfindungsgemäßen Verfahrens.The invention is based on the method according to the invention in that at least one additional consumer pneumatically actuated via at least one additional compressed air outlet is and that at least one further electrically controllable solenoid valve is arranged so that the further compressed air output in response to the switching state of the solenoid valve is pressurized. As a result, the advantages and special features of the control module according to the invention are also implemented in the context of a method. This also applies to the following particularly preferred embodiments of the method according to the invention.

Dieses zeichnet sich unter anderem dadurch aus, dass zum Erfassen eines Drucks an einem einer Betriebsbremse zugeordneten Ausgang ein Drucksensor über ein 2/2-Magnetventil im unbestromten Zustand mit dem Ausgang verbunden wird und dass zum Erfassen eines Drucks an einem Anschluss des Steuermoduls der Drucksensor über das 2/2-Magnetventil im bestromten Zustand mit dem Anschluss verbunden wird.This is characterized inter alia by the fact that for detecting a pressure on a service brake associated output a pressure sensor via a 2/2-solenoid valve in the de-energized state is connected to the output and that for detecting a pressure at a terminal of the control module of the pressure sensor the 2/2 solenoid valve is connected to the connection when energized.

Beispielsweise ist es nützlich, dass über das Steuermodul als Zusatzverbraucher ein Hebe-Senk-Ventil mit automatischer Rückstellung (RTR-Ventil) und/oder ein Liftachsventil (LAC-Ventil) und/oder ein 2/2-Ventil pneumatisch angesteuert werden.For example, it is useful that a lift-lower valve with automatic reset (RTR valve) and / or a Liftachsventil (LAC valve) and / or a 2/2-valve are pneumatically controlled via the control module as an additional consumer.

Die Erfindung betrifft weiterhin ein Nutzfahrzeug mit einem erfindungsgemäßen Steuermodul.The invention further relates to a utility vehicle having a control module according to the invention.

Der Erfindung liegt die Erkenntnis zugrunde, dass, ausgehend von einem Steuermodul des Standes der Technik, ohne großen konstruktiven Aufwand ein Steuermodul zur Verfügung gestellt werden kann, dass einerseits die Basisbremsfunktionen des elektronischen Bremssystems zur Verfügung stellt und andererseits eine pneumatische Ansteuerung von Zusatzverbrauchern gestattet.The invention is based on the finding that, starting from a control module of the prior art, a control module can be provided without great constructive effort, on the one hand, the base brake functions of the electronic brake system available on the other hand allows a pneumatic control of additional consumers.

Die Erfindung wird nun mit Bezug auf die begleitende Zeichnung anhand einer bevorzugten Ausführungsform beispielhaft erläutert.The invention will now be described by way of example with reference to the accompanying drawing with reference to a preferred embodiment.

Dabei zeigt:

Figur 1
eine schematische Darstellung einer ersten Ausführungsform eines erfindungsgemäßen Steuermodulsund
Figur 2
eine schematische Darstellung einer zweiten Ausführungsform eines erfindungsgemäßen Steuermoduls.
Showing:
FIG. 1
a schematic representation of a first embodiment of a control module according to the invention and
FIG. 2
a schematic representation of a second embodiment of a control module according to the invention.

Figur 1 zeigt eine schematische Darstellung einer ersten Ausführungsform eines erfindungsgemäßen Steuermoduls 100. Das Steuermodul 100 hat einen Druckluftsteuereingang 4, dem ein Steuerdruck von einem (nicht dargestellten) Bremsventil zugeführt werden kann. Das Steuermodul 100 hat weiterhin einen Vorratseingang 1-1, an den ein (nicht dargestellter) Druckluft-Vorratsbehälter anschließbar ist. Weiterhin sind Druckluftausgänge 21, 22 für den Anschluss von pneumatischen Bremselementen vorgesehen. FIG. 1 shows a schematic representation of a first embodiment of a control module 100 according to the invention. The control module 100 has a compressed air control input 4 to which a control pressure from a (not shown) brake valve can be supplied. The control module 100 further has a supply input 1-1, to which a (not shown) compressed air reservoir can be connected. Furthermore, compressed air outputs 21, 22 are provided for the connection of pneumatic brake elements.

Zur Darstellung der Bremsbasisfunktionen sind vier Magnetventile 110, 112, 114, 116 sowie zwei Relaisventile 118, 120 vorgesehen. Im dargestellten Schaltzustand der Magnetventile 110, 112, 114, 116 gelangt Steuerdruck vom Steuereingang 4 über das 3/2-Ventil 112 zu den 2/2-Ventilen 116 und von dort zu den jeweiligen Relaisventilen 118, 120. In Abhängigkeit von der Größe des Steuerdrucks wird den Druckluftausgängen 21, 22 über die Relaisventile 118, 120 Druck zugeführt. Die Magnetventile 114, 116 können unabhängig voneinander in ihren jeweils anderen Schaltzustand überführt werden, so dass die Druckluftausgänge 21, 22 individuell mit Druckluft beaufschlagt werden können.To illustrate the brake base functions four solenoid valves 110, 112, 114, 116 and two relay valves 118, 120 are provided. In the illustrated switching state of the solenoid valves 110, 112, 114, 116 reaches control pressure from the control input 4 via the 3/2-way valve 112 to the 2/2-valves 116 and from there to the respective relay valves 118, 120. Depending on the size of the control pressure, the compressed air outputs 21, 22 fed via the relay valves 118, 120 pressure. The solenoid valves 114, 116 can be transferred independently of each other in their respective other switching state, so that the compressed air outputs 21, 22 can be acted upon individually with compressed air.

Kombiniert mit den möglichen Schaltzuständen der Magnetventile 114, 116 ist es weiterhin möglich, die Magnetventile 110, 112 in ihre jeweils nicht dargestellten Schaltzustände zu überführen. Dann kann einem Relaisventil 118, 120 oder beiden Relaisventilen 118, 120 je nach Schaltzustand der Magnetventile 114, 116 am Steuereingang der am Druckluft-vorratseingang 1-1 anliegende Druck zugeführt werden.Combined with the possible switching states of the solenoid valves 114, 116, it is also possible to convert the solenoid valves 110, 112 in their respective switching states, not shown. Then, a relay valve 118, 120 or both relay valves 118, 120 depending on the switching state of the solenoid valves 114, 116 are supplied to the control input of the compressed air supply input 1-1 applied pressure.

Das Steuermodul 100 umfasst einen weiteren Eingang 1-2. Dieser Eingang 1-2 ist über ein Doppel-Rückschlagventil 138 angebunden, das mit Ausgängen 23, 24 in Verbindung steht. Diese Ausgänge 23, 24 sind für den Anschluss weiterer federbetätigter Bremselemente vorgesehen.The control module 100 includes another input 1-2. This input 1-2 is connected via a double check valve 138, which communicates with outputs 23, 24. These outputs 23, 24 are provided for the connection of further spring-actuated brake elements.

Das Steuermodul 100 ist weiterhin mit zwei 3/2-Magnetventilen 130, 132 ausgestattet. In dem dargestellten Schaltzustand der Magnetventile 130, 132 sind die diesen Magnetventilen 130, 132 zugeordneten Ausgänge 122, 124 über eine Entlüftung 3 mit der Atmosphäre verbunden. In den jeweils nicht dargestellten Schaltzuständen kann Druckluft vom Druckluft-Vorratseingang 1-1 und die jeweiligen Magnetventile 130, 132 zu den Druckluftausgängen 122, 124 und von dort zu den Zusatzverbrauchern 126, 128 gelangen.The control module 100 is further equipped with two 3/2 solenoid valves 130, 132. In the illustrated switching state of the solenoid valves 130, 132 associated with these solenoid valves 130, 132 outputs 122, 124 are connected via a vent 3 to the atmosphere. In the switching states, not shown, compressed air from the compressed air supply input 1-1 and the respective solenoid valves 130, 132 to the compressed air outlets 122, 124 and from there to the additional consumers 126, 128 arrive.

Bei den Zusatzverbrauchern kann es sich beispielsweise um ein Hebe-Senk-Ventil mit automatischer Rückstellung 126 und ein Liftachsventil 128 handeln. Weiterhin kann beispielsweise eine Antriebsschlupfregelung als Zusatzverbraucher von dem Steuermodul 100 pneumatisch angesteuert werden.The additional consumers may be, for example, a lift-lower valve with automatic reset 126 and a lift axle valve 128. Furthermore, for example, a traction control system can be pneumatically controlled by the control module 100 as an additional consumer.

Dem Steuermodul 100 ist weiterhin eine elektronische Steuereinheit 136 zugeordnet, die vorzugsweise in das Steuermodul 100 integriert ist. Diese elektronische Steuereinheit übernimmt die Ansteuerung der Magnetventile 110, 112, 114, 116, 130, 132, und sie erfasst die Ausgangssignale der Drucksensoren 142, 144, 146, 148, 150. Dabei misst der Drucksensor 142 den Steuerdruck, und der Drucksensor 146 misst den Vorratsdruck. Die Drucksensoren 144 und 148 messen die Drücke an den Druckausgängen 21 beziehungsweise 22. Der Drucksensor 150 ist beispielsweise dafür vorgesehen, den Beladungszustand des Anhängers über den Anschluss 42 zu erfassen.The control module 100 is further associated with an electronic control unit 136, which is preferably integrated in the control module 100. This electronic control unit takes over the control of the solenoid valves 110, 112, 114, 116, 130, 132, and detects the output signals of the pressure sensors 142, 144, 146, 148, 150. Here, the pressure sensor 142 measures the control pressure, and the pressure sensor 146 measures the supply pressure. The pressure sensors 144 and 148 measure the pressures at the pressure outputs 21 and 22, respectively. For example, the pressure sensor 150 is provided to detect the load condition of the trailer via the port 42.

Die den gemessenen Drücken entsprechenden Signale werden von der elektronischen Steuereinheit des Steuermoduls verarbeit. Insbesondere wird sichergestellt, dass ein ausreichender Druck für die Bereitstellung der Basisbremsfunktionen zur Verfügung steht, bevor den Zusatzverbrauchern 126, 128 Druckluft zugeführt wird.The signals corresponding to the measured pressures are processed by the electronic control unit of the control module. In particular, it is ensured that sufficient pressure for the provision of the base brake functions is available before the additional consumers 126, 128 compressed air is supplied.

Figur 2 zeigt eine schematische Darstellung einer zweiten Ausführungsform eines erfindungsgemäßen Steuermoduls. Die zweite Ausführungsform entspricht in weiten Teilen der ersten Ausführungsform der Erfindung, so dass auf die Beschreibung der sich entsprechenden Bauteile und Funktionen verzichtet werden kann. Die in Figur 1 dargestellten Zusatzverbraucher und die elektronische Steuerung sind zur Vereinfachung der Darstellung in Figur 2 nicht gezeigt. Im Unterschied zu der ersten Ausführungsform gemäß Figur 1 ist bei der zweiten Ausführungsform gemäß Figur 2 die Erfassung der Drücke durch drei Drucksensoren 144, 152, 154 realisiert. Dies gelingt durch die zusätzliche Anwesenheit von zwei weiteren 2/2-Magnetentilen 156, 158. Im dargestellten unbestromten Zustand des Magnetventils 156 wird durch den Drucksensor 152 der Bremsdruck am Ausgang 21 erfasst. Es ist erforderlich, eine solche Erfassung mit hoher Frequenz vorzunehmen, so dass sich der unbestromte Zustand des Magnetventils 156 hierfür anbietet. Seltener ist der Vorratsdruck am Druckluft-Vorratseingang 1-1 zu messen. Dies gelingt im bestromten Zustand des Magnetventils 156. In vergleichbarer Weise dient das Magnetventil 158 dem wahlweisen Erfassen der Drücke an den Anschlüssen 22 und 42. Es liegt ebenfalls im Rahmen der Erfindung, die Schaltzustände im Hinblick auf die Bestromung umzukehren, das heißt im bestromten Zustand den Bremsdruck am Ausgang 21 und im unbestromten Zustand den Vorratsdruck am Druckluft-Vorratseingang 1-1 zu erfassen. FIG. 2 shows a schematic representation of a second embodiment of a control module according to the invention. The second embodiment corresponds in many parts to the first embodiment of the invention, so that the description of the corresponding components and functions can be dispensed with. In the FIG. 1 shown additional consumers and the electronic control are to simplify the presentation in FIG. 2 Not shown. Unlike the first embodiment according to FIG. 1 is according to the second embodiment FIG. 2 the detection of the pressures by three pressure sensors 144, 152, 154 realized. This is achieved by the additional presence of two further 2/2-solenoid valves 156, 158. In the illustrated de-energized state of the solenoid valve 156 is detected by the pressure sensor 152, the brake pressure at the output 21. It is necessary to make such detection at a high frequency, so that the energized state of the solenoid valve 156 offers for this purpose. It is less common to measure the supply pressure at the compressed air supply inlet 1-1. In a similar manner, the solenoid valve 158 is used to selectively detect the pressures at the terminals 22 and 42. It is also within the scope of the invention to reverse the switching states with respect to the energization, that is in the energized state to detect the brake pressure at the outlet 21 and in the de-energized state, the reservoir pressure at the compressed air supply input 1-1.

Weitere Unterschiede zwischen den Ausführungsformen gemäß den Figuren 1 und 2 bestehen darin, dass bei der Ausführungsform gemäß Figur 2 zwei weitere Anschlüsse 25, 26 an dem Doppel-Rückschlagventil 138 vorgesehen sind und dass die beiden Entlüftungsausgänge 3 der Figur 1 zu einem Entlüftungsausgang gemäß Figur 2 zusammengefasst sind.Further differences between the embodiments according to the FIGS. 1 and 2 are that in the embodiment according to FIG. 2 two further ports 25, 26 are provided on the double check valve 138 and that the two venting outputs 3 of FIG. 1 to a vent outlet according to FIG. 2 are summarized.

Die in der vorstehenden Beschreibung, in den Zeichnungen sowie in den Ansprüchen offenbarten Merkmale der Erfindung können sowohl einzeln als auch in beliebiger Kombination für die Verwirklichung der Erfindung wesentlich sein.The features of the invention disclosed in the foregoing description, in the drawings and in the claims may be essential to the realization of the invention both individually and in any combination.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

1-11-1
Druckluft-VorratseingangCompressed air reservoir inlet
1-21-2
Eingangentrance
33
Entlüftungvent
44
Druckluft-SteuereingangPneumatic control input
2121
DruckluftausgangCompressed air outlet
2222
DruckluftausgangCompressed air outlet
2323
Ausgangoutput
2424
Ausgangoutput
2525
Ausgangoutput
2626
Ausgangoutput
4242
Anschlussconnection
100100
Steuermodulcontrol module
110110
Magnetventil / 3/2-VentilSolenoid valve / 3/2 valve
112112
Magnetventil / 3/2-VentilSolenoid valve / 3/2 valve
114114
Magnetventil / 2/2-VentilSolenoid valve / 2/2 valve
116116
Magnetventil / 2/2-VentilSolenoid valve / 2/2 valve
118118
Relaisventilrelay valve
120120
Relaisventilrelay valve
122122
Ausgangoutput
124124
Ausgangoutput
126126
Zusatzverbraucheradditional consumer
128128
Zusatzverbraucheradditional consumer
130130
Magnetventilmagnetic valve
132132
Magnetventilmagnetic valve
136136
Steuereinheitcontrol unit
138138
Doppel-RückschlagventilDouble check valve
142142
Drucksensorpressure sensor
144144
Drucksensorpressure sensor
146146
Drucksensorpressure sensor
148148
Drucksensorpressure sensor
150150
Drucksensorpressure sensor
152152
Drucksensorpressure sensor
154154
Drucksensorpressure sensor
156156
Magnetventil / 2/2-VentilSolenoid valve / 2/2 valve
158158
Magnetventil / 2/2-VentilSolenoid valve / 2/2 valve

Claims (11)

  1. Control module for a trailer brake system of a commercial vehicle, comprising
    - at least one compressed-air control inlet (4) for the supply of a control pressure,
    - at least one compressed-air reservoir inlet (1-1) for the supply of a reservoir pressure,
    - a plurality of compressed-air outlets (21, 22) for the connection of braking elements, and
    - a plurality of electrically controllable solenoid-operated valves (110, 112, 114, 116) as well as a plurality of relay valves (118, 120) interacting with said solenoid-operated valves, which are so disposed that said compressed-air outlets (21, 22) may be subjected to pressure as a function of the switching conditions of said solenoid-operated valves (110, 112, 114, 116),
    characterized in
    - that at least one further compressed-air outlet (122, 124) is provided for the connection and the pneumatic control of at least one additional load (126, 128),
    - that at least one further controllable solenoid-operated valve (130, 132) is so disposed that said further compressed-air outlet (122, 124) may be subjected to pressure as a function of the switching condition of said solenoid-operated valve (130, 132), and
    - that compressed air can be supplied to said at least one additional load (126, 128) only when a sufficient pressure level is available for providing the basic braking functions.
  2. Control module according to Claim 1, characterized in
    - that two compressed-air outlets (21, 22) for the connection of braking elements and four solenoid-operated valves (110, 112, 114, 116) interacting with two relay valves (118, 120) are provided, and
    - that two compressed-air outlets (122, 124) for the connection of additional loads (126, 128) and two further solenoid-operated valves (130, 132) associated with these compressed-air outlets (122, 124) are provided.
  3. Control module according to Claim 1 or 2, characterized in
    - that said solenoid-operated valves interacting with said relay valves comprise two 2/2-way valves (114, 116) and two 3/2-way valves (110, 112), and
    - that said at least one further solenoid-operated valve (130, 132) is a 3/2-way valve.
  4. Control module according to any of the preceding Claims, characterized in that pressure sensors (142, 144, 146, 148, 150, 152, 154) are provided for the detection of pressures at connectors of the control module.
  5. Control module according to any of the preceding Claims, characterized in that at least one pressure sensor (152, 154) is adapted to be connected via a solenoid-operated valve (156, 158) to different measuring sites, depending on the switching condition of said solenoid-operated valve.
  6. Control module according to any of the preceding Claims, characterized in that a lifting/lowering valve with automatic return function (RTR valve) and/or one lifting axle valve (LAC valve) and/or one 2/2-way valve may be connected as additional loads (126, 128).
  7. Control module according to any of the preceding Claims, characterized in that it comprises an electronic controller (136) for controlling said solenoid-operated valves and for detecting and processing pressure-dependent signals.
  8. Method of controlling pneumatic functions of a commercial vehicle trailer, comprising a control module including
    - at least one compressed-air control inlet (4) for the supply of a control pressure,
    - at least compressed-air reservoir inlet (1-1) for the supply of a reservoir pressure,
    - a plurality of compressed-air outlets (21, 22) for the connection of braking elements, and
    - a plurality of electrically controllable solenoid-operated valves (110, 112, 114, 116) as well as a plurality of relay valves (118, 120) interacting with said solenoid-operated valves, which are so disposed that said compressed-air outlets (21, 22) may be subjected to pressure as a function of the switching conditions of said solenoid-operated valves (110, 112, 114, 116),
    characterized in
    - that at least one additional load (126, 128) is pneumatically controlled via at least one further compressed-air outlet (122, 124),
    - that at least one further controllable solenoid-operated valve (130, 132) is so disposed that said further compressed-air outlet (122, 124) is subjected to pressure as a function of the switching condition of said solenoid-operated valve (130, 132), and
    - that compressed air is supplied to said at least one additional load (126, 128) only when a sufficient pressure level is available for providing the basic braking functions.
  9. Method according to Claim 8, characterized in that a pressure sensor (152, 154) is connected via a 2/2-way solenoid-operated valve (156, 158) in the deenergized condition to one outlet (21, 22) for detecting a pressure on this outlet (21, 22) associated with a service brake, and that said pressure sensor (152, 154) is connected to one connector (1-1, 42) via said 2/2-way solenoid-operated valve (156, 158) in the energized condition for detecting a pressure on this connector (1-1, 42) of the control module.
  10. Method according to Claim 8 or 9, characterized in that a lifting/lowering valve with automatic return function (RTR valve) and/or a lifting axle valve (LAC valve) and/or a 2/2-way valve are pneumatically controlled as additional loads (126, 128) via said control module.
  11. Commercial vehicle comprising a control module according to any of the Claims 1 to 7.
EP05015224A 2004-07-16 2005-07-13 Command module and control method for a pneumatic trailer brake Not-in-force EP1616766B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102004034466A DE102004034466B4 (en) 2004-07-16 2004-07-16 A method of controlling pneumatic functions of a utility vehicle trailer and control module for a trailer brake system

Publications (3)

Publication Number Publication Date
EP1616766A2 EP1616766A2 (en) 2006-01-18
EP1616766A3 EP1616766A3 (en) 2008-11-19
EP1616766B1 true EP1616766B1 (en) 2010-04-07

Family

ID=35241121

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05015224A Not-in-force EP1616766B1 (en) 2004-07-16 2005-07-13 Command module and control method for a pneumatic trailer brake

Country Status (3)

Country Link
EP (1) EP1616766B1 (en)
AT (1) ATE463398T1 (en)
DE (2) DE102004034466B4 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4202729C2 (en) * 1991-06-24 1993-11-25 Grau Gmbh Control system for arbitrarily lifting and lowering the vehicle body of air-sprung vehicles
DE19514185C1 (en) * 1995-04-21 1996-10-24 Knorr Bremse Systeme Vehicle brake system with load dependent control of front axle brake pressure
DE19544622C1 (en) * 1995-11-30 1996-09-05 Grau Gmbh Control system for vehicle with adjustable pneumatic suspension
DE20122549U1 (en) * 2000-09-14 2006-05-04 Wabco Gmbh & Co.Ohg Brake valve for trailers has first no-return valve rendered ineffective when supply connection has no pressure
ITTO20011201A1 (en) * 2001-12-21 2003-06-21 Knorr Bremse Systeme BRAKING SYSTEM FOR A TRAILER VEHICLE.

Also Published As

Publication number Publication date
EP1616766A3 (en) 2008-11-19
ATE463398T1 (en) 2010-04-15
EP1616766A2 (en) 2006-01-18
DE102004034466A1 (en) 2006-02-09
DE102004034466B4 (en) 2010-08-26
DE502005009348D1 (en) 2010-05-20

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